如图<img alt="/upload/photos/20190626/b66657fb3d844706b84d06be221e2bab.jpg" src="/upload/photos/20190626/b66657fb3d844706b84d06be221e2bab.jpg" />所示为架空线路拉线结构示意图，其图中2表示的金具名称是(____)。
A延长环
B楔形线夹
C拉线棒
DUT线夹
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upload/photos/20190626/b66657fb3d844706b84d06be221e2bab.jpg />所示为架空线路拉线结构示意图，其图中2表示的金具名称是(____)。
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upload/photos/20190626/63d1a78aba874161987e570bad786d6f.jpg />所示为架空线路拉线结构示意图，其图中5表示的金具名称是(____)。
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